The myth about 100% protection from bots (or, rather, marketing slogan) is republished in thousands publications on the internet.

Those republishing it obviously did not minimally bother to search internet by keywords:

jigsaw puzzles machine (computer) solving (assembling)

visual recognition

to know that jigsaw puzzles were being successfully solved (assembled) by computer (machines, bots) long before CAPTCHA invention, image- video- or speech recognition.
Later, I shall update this article with references of concrete reports debunking this myth